Not an expert, but I found this article (stupid video in corner warning): https://www.cbsnews.com/news/taylor-farms-mexico-fda-inspection-cyclosporiasis-outbreak/

Looks like the FDA does inspections of foreign facilities, so there should have been a US inspection in Mexico at the farm/plant. However, the FDA is underfunded for its targets and has been for years, and then the cuts made a bad situation worse by firing people.

The lettuce and this (jalapeño) outbreak were both from farms in Mexico, I believe